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Support 4 3IN1 serial ports and 2 10/100Base-T(X) self-adaptive Ethernet interfaces
Support conversion between Modbus RTU/ASCII and Modbus TCP protocol
Support RTU Master, RTU Slave, ASCII Master, ASCII Slave and other operating modes
Support -40~75℃ wide temperature operation

  • Description
  • Specification

IGW1114-4DI(3IN1)-DB-2P(12~48VDC) of Modbus gateway is designed for integrating Modbus RTU/ASCII and Modbus TCP; it can achieve the conversion between Modbus RTU/ASCII and Modbus TCP protocol. This product supports 4 3IN1 serial ports and 2 100M Ethernet copper ports. They adopt DIN-Rail or wall mounting to meet the requirements of different application scenes.

Modbus gateway supports multiple network protocols, such as Modbus, TCP, IP, UDP, TELNET, ARP, ICMP, HTTP, DNS and DHCP protocols. It possesses complete management function, and supports access control, rapid configuration, online upgrading, etc. RTU Master, RTU Slave, ASCII Master, ASCII Slave and other operating modes are supported; it supports up to 32 TCP Slave requests under Master mode and 16 TCP Master connections under Slave mode. TELNET, WEB and other access modes are also supported. It can provide you with good user experience via friendly design of network management system interface, simple and convenient operation.

DIP switch can achieve the device restore factory defaults. Hardware adopts fanless, low power consumption, wide temperature and voltage design and has passed rigorous industrial standard tests, which can suit for the industrial scene environment with harsh requirements for EMC. It can be widely used in PLC control and management, Building Automation System, Health Care Automation System, measuring instrument and environmental forces monitoring system.

Features and Benefits

Support 2 10/100Base-T(X) self-adaptive Ethernet interfaces, provide dual IP and MAC addresses to meet the requirements of multiple network management or backups
Support 300bps-115200bps line speed and non-blocking communication
Support RTS/CTS, DTR/DSR and XON/XOFF flow control
Support response timeout setting of characters
Support RTU Master, RTU Slave, ASCII Master, ASCII Slave and other operating modes
Support up to 32 TCP Slave requests under Master mode
Support up to 16 TCP Master connections under Slave mode
Support virtual and real ID mapping to achieve flexible access between Master and Slave devices
Support IP address and MAC address filtering, which is easy to achieve accurate access control
Support classification of user management to achieve humanized permission management
Support monitoring for serial port status and parameters, so the communication status will be clear at a glance
Support Windows configuration tool, TELNET, WEB configuration forms and access control
File management is convenient for the device rapid configuration and online upgrading

Ethernet Port


Standard: 10Base-T, 100Base-TX


Rate: 10/100M automatic flow control, MDI/MDI-X autotunning

Interface quantity: 2

Interface form: RJ45

Duplex mode: full/half duplex mode self-adaption


Serial Port


Standard: EIA RS-232C, RS-485, RS-422

Protocol: Modbus RTU/ASCII

Quantity of serial port: 4 3IN1 serial port

RS-232 signal: RXD, TXD, GND

RS-485 signal: D+, D-, GND

RS-422 signal: T+, T-, GND, R+, R-

Baud rate: 300-115200bps

Data bit: 7bit, 8bit

Parity bit: None, Even, Odd, Space, Mark

Stop bit: 1bit, 2bit

Interface form: DB9 Male

Directional control: RS-485 direction adopts Automatic Data Direction Control technology

Pull high/low resistor for RS-485: 4.7kΩ

Intensity of electromagnetic isolation: 2KV

Operating mode: RTU Master, RTU Slave, ASCII Master and ASCII Slave

Connection quantity: up to 32 TCP Slave requests are supported under Master mode

                                      up to 16 TCP Master connections are supported under Slave mode




WEB configuration management, TELNET configuration, Windows configuration tool




Classification of User Permissions, IP address filtering, MAC address filtering, WEB Console, TELNET Console





Power supply indicator, running indicator, Ethernet port indicator, serial port indicator






12~48VDC, 4-pin terminal blocks

Power supply nonpolarity





No-load: 2.59W@48VDC

Full-load: 2.93W@48VDC





Operating temperature: -40~75℃

Storage temperature: -40~85℃

Relative humidity: 5%~95%(no condensation)





Housing: IP40 protection, metal

Installation: DIN-Rail or wall mounting

Dimension (W x H x D): 53mm×138mm×110mm

Weight: 640g





IEC 61000-4-2 (ESD, Electro-static Discharge), Level 3

Air discharge: ±8kV

Contact discharge: ±6kV

IEC 61000-4-4 (EFT/B, Electrical Fast Transient/Burst), Level 3

Power supply: ±2kV

Signal: ±1kV

IEC 61000-4-5 (Surge), Level 3

Power supply: common mode ±2kV, differential mode ±1kV

Signal: common mode ±2kV, differential mode ±1kV

Shock: IEC 60068-2-27

Free fall: IEC 60068-2-32

Vibration: IEC 60068-2-6








3 years


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